That tweet links to this Google blob post — I mean blog post —
which is actually just a letter to Google's blobs telling them
they need to go away for no clear reason. It's a very sad post,
mainly because it didn't need to be written.

Google is making a huge mistake by killing its blob emoji and
replacing them with these safer, cookie-cutter emojis, which you
can see below.

Google

Google has a
lengthy Medium post on why it's shifting from blobs to more
"consistent" emoji designs, but it's a really boring read
and there's only one relevant paragraph, which is right here:

By formalizing the shape, grid, representation, and color,
we were able to unify the set while retaining expressiveness and
character. By creating a strong design system we also addressed a
major shortcoming in our old style, and we enabled the emoji to
be created by more than one illustrator while remaining
consistent, legible, understandable, and representative in any
context.

Now, I'm not a designer or anything, but I really don't
care about consistency across emojis. In fact, I prefer Google's
blob emojis — and use them as my default emojis in third-party
apps like Slack — because they don't feel
overly-engineered. They're one of the few Google products that
feels hand-painted and unique: They're not symmetrical or
anything, but they don't need to be. They're just so, so cute.
Isn't that worth something?

The so-called "silver lining" Google provides here is that its
blobs aren't totally going away — you'll still be
able to use blob "stickers" in Google's free Allo messaging app.
But let's be real: No one uses the Allo app, and saying
blobs still exist there is a cheap draw to get people to use an
unpopular app. If Google really cared about blobs, they'd make
the redesigned emojis the default for Android and other
Google products, but allow blobs to be an optional default.
Right now, that's not happening — and it's a real shame.